CN103471660B - A kind of impeller box - Google Patents
A kind of impeller box Download PDFInfo
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- CN103471660B CN103471660B CN201310405819.1A CN201310405819A CN103471660B CN 103471660 B CN103471660 B CN 103471660B CN 201310405819 A CN201310405819 A CN 201310405819A CN 103471660 B CN103471660 B CN 103471660B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 210000003205 muscle Anatomy 0.000 claims abstract description 54
- 238000005259 measurement Methods 0.000 abstract description 17
- 239000012530 fluid Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The invention discloses a kind of impeller box, comprise housing, be positioned at the gearcase of housing top, some upper base muscle and the muscle of going to the bottom, some delivery ports and some water inlets, the medial end of some upper base muscle forms circle, and this circular radius is 1/6 to 1/3 of housing internal diameter; The height of upper base muscle is greater than 4 millimeters; The height of muscle of going to the bottom is 2 to 4 millimeters, and two adjacent angles of going to the bottom between muscle are more than or equal to 10 degree, are less than or equal to 45 degree; The area sum of the upper opening of some delivery ports is 1/3 to 2/3 of housing 1 sidewall face area; The width sum of the water inlet end of some water inlets is 1/3 to 1/2 of housing periphery length, and the width sum of the water side of some water inlets is 1/3 to 1/2 of the interior Zhou Changdu of housing, and the height of water inlet exceedes 1/2 of blade height. Compared with prior art, the present invention can improve the measure error of water meter in the time of large stream and rill simultaneously, improves the certainty of measurement of water meter and expands the measurement range of water meter.
Description
Technical field
The invention belongs to water meter technical field, specifically a kind of impeller box.
Background technology
Along with the generally use of running water in worldwide, be the universal indispensable instrument of process of running water for the water meter of water measurement amount.
In order to control the measuring accuracy of water meter speed and water meter, at present a lot of water meter movements all adopt adjustment sheet to regulate, this adjustment sheet is all arranged on the middle, outside of water meter movement water stream channel water inlet conventionally, and regulate by the angle that regulates this adjustment sheet, such structure is because adjustment sheet is positioned at water meter movement water stream channel water inlet, current have certain reflex to current touching after adjustment sheet, inevitably can cause interference to current, can have influence on to a certain extent the measuring accuracy of water meter.
Design the water meter of superior performance, the certainty of measurement of water meter rill will be controlled on the one hand time, the certainty of measurement will control on the other hand large stream time. Rotor water gauge can be subject to the impact of various resistances in measuring process, such as viscous friction drag square, such as the suffered mechanical friction resistance square of impeller shaft, in the time of rill, the driving moment being subject to due to impeller is less, so viscous friction drag square and mechanical friction resistance square are larger on measurement result impact; When large stream, the driving moment being subject to due to impeller is very large, and viscous friction drag square and mechanical friction resistance square are relatively little on wheel speed impact. Therefore, existing water meter is often insensitive to current reaction in the time of rill, causes wheel speed excessively slow, and in the time of large stream, wheel speed is too fast. Range and the precision of existing water meter are all a greater impact.
Summary of the invention
The present invention is directed to deficiency of the prior art, a kind of impeller box simple in structure is provided, the measure error when improving the Structure Improvement water meter of impeller box at rill and flow greatly, improves the certainty of measurement of water meter and expands the measurement range of water meter.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals: a kind of impeller box, comprise housing, be positioned at the gearcase of described housing top, be the radial some upper base muscle that are uniformly distributed in described gearcase downside, be the radial some muscle of going to the bottom that are uniformly distributed on described housing bottom surface, be opened in some delivery ports of upper end, described housing side and be opened in some water inlets of lower end, described housing side, it is characterized in that: the medial end of some described upper base muscle forms circle, and this circular radius is 1/6 to 1/3 of described housing internal diameter, the height of described upper base muscle is greater than 4 millimeters, the height of the described muscle of going to the bottom is 2 to 4 millimeters, and two angles of going to the bottom between muscle described in adjacent are more than or equal to 10 degree, are less than or equal to 45 degree, the area sum of the upper opening of some described delivery ports is 1/3 to 2/3 of described housing 1 sidewall face area, the width sum of the water inlet end of some described water inlets is 1/3 to 1/2 of described housing periphery length, and the width sum of the water side of some described water inlets is 1/3 to 1/2 of the interior Zhou Changdu of described housing, and the height of described water inlet exceedes 1/2 of blade height.
In the time of rill, impeller is subject to the impact of mechanical friction resistance larger, and the border circular areas that the end of the present invention muscle body end forms can effectively reduce the impact of mechanical friction resistance on impeller, its principle is as follows: impeller is subject to buoyancy in fluid, under fluid buoyant support, it is possible that impeller is suspended in fluid completely, this buoyancy can reduce mechanical friction resistance, but existing upper base muscle has formed more whirlpool region in the center of impeller shaft, increase the downward pressure distribution in this flow field, region, cause the increase of mechanical friction resistance, and the present invention has removed the end muscle distribution of impeller shaft central area, make impeller center reduce the appearance of whirlpool, thereby reach reduction mechanical friction resistance, effectively reduce the object of the impact of mechanical friction resistance on impeller, secondly, increased the distance of going to the bottom between muscle and impeller, thereby the fluid additional friction moment of resistance that impeller is subject to is reduced, finally, by expanding the area of water inlet and delivery port, make current more smooth and easy, reduce viscous friction drag square, increased the driving moment of impeller, on the other hand simultaneously, increase the height of water inlet, part current are directly impacted on blade, increased the driving moment of impeller. make the reaction of water meter in the time of rill sensitiveer, measure more accurate
In the time of large stream, the present invention is by strengthening the height of end muscle body, in corresponding position, impeller edge and impeller box water outlet produce a large amount of whirlpools, improve the suffered viscous friction drag square of impeller, in the time of large stream, increase the resistance of impeller, the rotating speed of impeller while reducing large stream, the certainty of measurement while making to flow greatly is also improved; And during due to rill, the increase of end muscle height is minimum to exerting an influence of whirlpool, therefore, the measurement can't affect rill time; Angle of going to the bottom between muscle of the present invention is more than or equal to 10 degree in addition, is less than or equal to make the to go to the bottom setting of muscle of 45 degree more intensive, thereby makes the turbulent flow that formed by the muscle of going to the bottom more stable, has increased the fluid additional friction moment of resistance that impeller is subject to simultaneously. And these measures are very little on rill impact, therefore, the present invention can improve the measure error of water meter in the time of large stream and rill simultaneously, improves the certainty of measurement of water meter and expands the measurement range of water meter.
In order to obtain better technique effect, further technical measures also comprise: above-mentioned upper base muscle and described in the go to the bottom surface of muscle be rounding off curved surface. Rounding off curved surface makes current more stable, thereby improves the measure error of water meter, improves the certainty of measurement of water meter.
As preferably, above-mentioned upper base muscle and described in go to the bottom the cross section of muscle for semicircle.
Further, the center line of above-mentioned delivery port is 90 degree with the angle of the radius of the water inlet end of this center line of mistake. Be arranged so that like this flow direction of water outlet current and the center line of delivery port are consistent, make water outlet more smooth and easy, reduced viscous friction drag square on the one hand, increased on the other hand the driving moment of impeller, make impeller sensitiveer to rill reaction, water meter is measured more accurate.
Further, the bottom surface of above-mentioned delivery port is lower than the upper surface of impeller. This structure is also in order to make current more smooth and easy.
Further improve, the quantity of above-mentioned delivery port is identical with the quantity of impeller blade. The quantity of delivery port too much can cause producing too much whirlpool near delivery port, affect the outflow of water, quantity is very few, can cause the viscous friction drag square that impeller is subject to increase, wheel speed is reduced, affect its reaction sensitivity to rill, therefore, it is identical with the quantity of impeller blade that the present invention optimizes the quantity at the mouth of a river.
Further, the just tangent line to impeller of the water side end face of above-mentioned water inlet. The flow direction of current that is arranged so that like this water side of water inlet is vertical with impeller blade, has increased the driving moment of impeller, makes impeller sensitiveer to rill reaction, and water meter is measured more accurate.
Further, the quantity that the quantity of above-mentioned water inlet is greater than impeller blade is less than 2 times of quantity of impeller blade. The quantity of more water inlet is conducive to strengthen the driving moment of impeller, but too much words have increased the probability of water impact in vane end faces, cause obstruction, therefore, the quantity that the quantity of water inlet of the present invention is preferably greater than impeller blade is less than 2 times of quantity of impeller blade.
Compared with prior art, the invention has the beneficial effects as follows: in the time of rill, impeller is subject to the impact of mechanical friction resistance larger, and the border circular areas that the end of the present invention muscle body end forms can effectively reduce the impact of mechanical friction resistance on impeller, its principle is as follows: impeller is subject to buoyancy in fluid, under fluid buoyant support, it is possible that impeller is suspended in fluid completely, this buoyancy can reduce mechanical friction resistance, but existing upper base muscle has formed more whirlpool region in the center of impeller shaft, increase the downward pressure distribution in this flow field, region, cause the increase of mechanical friction resistance, and the present invention has removed the end muscle distribution of impeller shaft central area, make impeller center reduce the appearance of whirlpool, thereby reach reduction mechanical friction resistance, effectively reduce the object of the impact of mechanical friction resistance on impeller, secondly, increased the distance of going to the bottom between muscle and impeller, thereby the fluid additional friction moment of resistance that impeller is subject to is reduced, finally, by expanding the area of water inlet and delivery port, make current more smooth and easy, reduce viscous friction drag square, increased the driving moment of impeller, on the other hand simultaneously, increase the height of water inlet, part current are directly impacted on blade, increased the driving moment of impeller. make the reaction of water meter in the time of rill sensitiveer, measure more accurate
In the time of large stream, the present invention is by strengthening the height of end muscle body, in corresponding position, impeller edge and impeller box water outlet produce a large amount of whirlpools, improve the suffered viscous friction drag square of impeller, in the time of large stream, increase the resistance of impeller, the rotating speed of impeller while reducing large stream, the certainty of measurement while making to flow greatly is also improved; And during due to rill, the increase of end muscle height is minimum to exerting an influence of whirlpool, therefore, the measurement can't affect rill time; Angle of going to the bottom between muscle of the present invention is more than or equal to 10 degree in addition, is less than or equal to make the to go to the bottom setting of muscle of 45 degree more intensive, thereby makes the turbulent flow that formed by the muscle of going to the bottom more stable, has increased the fluid additional friction moment of resistance that impeller is subject to simultaneously. And these measures are very little on rill impact, therefore, the present invention can improve the measure error of water meter in the time of large stream and rill simultaneously, improves the certainty of measurement of water meter and expands the measurement range of water meter.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the structural representation of embodiment of the present invention middle shell.
Fig. 3 is the structural representation of embodiment of the present invention middle gear box.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail:Embodiment.
A kind of impeller box, comprise housing 1, be positioned at the gearcase 2 of described housing top, be the radial some upper base muscle 3 that are uniformly distributed in described gearcase 2 downsides, be the radial some muscle 4 of going to the bottom that are uniformly distributed on described housing 1 bottom surface, be opened in some delivery ports 5 of described housing 1 upper end, side and be opened in some water inlets 6 of described housing 1 lower end, side, it is characterized in that: the medial end of some described upper base muscle 3 forms circle, and this circular radius is 1/6 to 1/3 of described housing 1 internal diameter; The height of described upper base muscle 3 is greater than 4 millimeters; The height of the described muscle 4 of going to the bottom is 2 to 4 millimeters, and two angles of going to the bottom between muscle 4 described in adjacent are more than or equal to 10 degree, are less than or equal to 45 degree; The area sum of the upper opening of some described delivery ports 5 is 1/3 to 2/3 of described housing 1 sidewall face area; The width sum of the water inlet end of some described water inlets 6 is 1/3 to 1/2 of described housing 1 periphery length, the width sum of the water side of some described water inlets 6 is 1/3 to 1/2 of described housing 1 interior Zhou Changdu, and the height of described water inlet 6 exceedes 1/2 of blade height.
Wherein, above-mentioned upper base muscle 3 and described in the go to the bottom surface of muscle 4 be rounding off curved surface, the preferred upper base muscle 3 of the present embodiment and described in go to the bottom the cross section of muscle 4 for semicircle.
Wherein, the center line of above-mentioned delivery port 5 is 90 degree with the angle of radius of the water inlet end of crossing this center line, and the bottom surface of delivery port 5 is lower than the upper surface of impeller, and the quantity of above-mentioned delivery port 5 is identical with the quantity of impeller blade.
Wherein, the just tangent line to impeller of the water side end face of above-mentioned water inlet 6, the quantity that the quantity of above-mentioned water inlet 6 is greater than impeller blade is less than 2 times of quantity of impeller blade.
Claims (8)
1. an impeller box, comprise housing (1), be positioned at the gearcase (2) of described housing (1) top, be the radial some upper base muscle (3) that are uniformly distributed in described gearcase (2) downside, be the radial some muscle of going to the bottom (4) that are uniformly distributed on described housing (1) bottom surface, be opened in some delivery ports (5) of described housing (1) upper end, side and be opened in some water inlets (6) of described housing (1) lower end, side, it is characterized in that: the medial end of some described upper base muscle (3) forms circle, and this circular radius is 1/6 to 1/3 of described housing (1) internal diameter, the height of described upper base muscle (3) is greater than 4 millimeters, the height of the described muscle of going to the bottom (4) is 2 to 4 millimeters, and two angles of going to the bottom between muscle (4) described in adjacent are more than or equal to 10 degree, are less than or equal to 45 degree, the area sum of the upper opening of some described delivery ports (5) is 1/3 to 2/3 of described housing (1) sidewall face area, the width sum of the water inlet end of some described water inlets (6) is 1/3 to 1/2 of described housing (1) periphery length, the width sum of the water side of some described water inlets (6) is 1/3 to 1/2 of the interior Zhou Changdu of described housing (1), and the height of described water inlet (6) exceedes 1/2 of blade height.
2. a kind of impeller box according to claim 1, is characterized in that: described upper base muscle (3) and described in the go to the bottom surface of muscle (4) be rounding off curved surface.
3. a kind of impeller box according to claim 2, is characterized in that: described upper base muscle (3) and described in go to the bottom the cross section of muscle (4) for semicircle.
4. a kind of impeller box according to claim 1, is characterized in that: the center line of described delivery port (5) and the excessively angle of the radius of the water inlet end of this center line are 90 degree.
5. a kind of impeller box according to claim 1, is characterized in that: the bottom surface of described delivery port (5) is lower than the upper surface of impeller.
6. a kind of impeller box according to claim 1, is characterized in that: the quantity of described delivery port (5) is identical with the quantity of impeller blade.
7. a kind of impeller box according to claim 1, is characterized in that: the just tangent line to impeller of the water side end face of described water inlet (6).
8. a kind of impeller box according to claim 1, is characterized in that: the quantity that the quantity of described water inlet (6) is greater than impeller blade is less than 2 times of quantity of impeller blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310405819.1A CN103471660B (en) | 2013-09-09 | 2013-09-09 | A kind of impeller box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310405819.1A CN103471660B (en) | 2013-09-09 | 2013-09-09 | A kind of impeller box |
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| Publication Number | Publication Date |
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| CN103471660A CN103471660A (en) | 2013-12-25 |
| CN103471660B true CN103471660B (en) | 2016-05-18 |
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| CN201310405819.1A Active CN103471660B (en) | 2013-09-09 | 2013-09-09 | A kind of impeller box |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUB20160299A1 (en) * | 2016-02-05 | 2017-08-05 | Elbi Int Spa | Measuring device for the flow rate of a fluid in a duct |
| CN108533872B (en) * | 2018-04-24 | 2023-06-20 | 西南交通大学 | A device for improving the stability of liquid flow |
| KR102153683B1 (en) * | 2020-03-04 | 2020-09-08 | 이동헌 | Groundwater tube well digital meter with communication function |
| CN112816003B (en) * | 2020-12-31 | 2024-05-28 | 宁波水表(集团)股份有限公司 | Impeller box subassembly and have water gauge of this subassembly that flows to more |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2364435Y (en) * | 1999-03-15 | 2000-02-16 | 马慈安 | Dry bidirectional quantitative watermeter |
| CN102788623A (en) * | 2012-08-20 | 2012-11-21 | 四川府星仪表有限公司 | Wide-range photoelectric direct-reading water meter |
| CN202869551U (en) * | 2012-10-11 | 2013-04-10 | 宁波水表股份有限公司 | Water meter vane wheel box |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7281437B2 (en) * | 2004-06-10 | 2007-10-16 | Arad Dalia | Multi-jet water meter with flow compensating basket |
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2013
- 2013-09-09 CN CN201310405819.1A patent/CN103471660B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2364435Y (en) * | 1999-03-15 | 2000-02-16 | 马慈安 | Dry bidirectional quantitative watermeter |
| CN102788623A (en) * | 2012-08-20 | 2012-11-21 | 四川府星仪表有限公司 | Wide-range photoelectric direct-reading water meter |
| CN202869551U (en) * | 2012-10-11 | 2013-04-10 | 宁波水表股份有限公司 | Water meter vane wheel box |
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| CN103471660A (en) | 2013-12-25 |
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Address after: 315032 No. 268, Lane 99, Beihai Road, Jiangbei District, Zhejiang, Ningbo Patentee after: Ningbo water meter (Group) Co.,Ltd. Address before: 315032 No. 268, Lane 99, Beihai Road, Jiangbei District, Zhejiang, Ningbo Patentee before: NINGBO WATER METER Co.,Ltd. |